VLBI observations at 147 GHz: first detection of transatlantic fringes in bright AGN

Krichbaum, T. P.; Graham, D. A.; Alef, W.; Polatidis, A.; Bach, U.; Witzel, A.; Zensus, J. A.; Greve, A.; Grewing, M.; Doeleman, S.; Phillips, R.; Rogers, A. E. E.; Titus, M.; Fagg, H.; Strittmatter, P.; Wilson, T. L.; Ziurys, L.; Freund, R.; K"on"onen, P.; Peltonen, J.; Urpo, S.; Rantakyro, F.; Conway, J.; Booth, R. S.

VLBI observations at 147 GHz: first detection of transatlantic fringes in bright AGN

Authors

Description

At 147 GHz (2mm wavelength), we detected three prominent AGN (NRAO150, 3C279, 1633+382) with Very Long Baseline Interferometry (VLBI) with an angular resolution of only 18 micro-arcseconds on the baseline between two antennas in Arizona (10m HHT and 12m KittPeak) and the IRAM 30m antenna on Pico Veleta in Spain. This is a new world record in radio interferometry and astronomical imaging and opens fascinating future possibilities to directly image and study the innermost regions in Quasars and other Active Galactic Nuclei.
4 pages, 3 figures, appears in: Proceedings of the 6th European VLBI Network Symposium held on June 25th-28th in Bonn, Germany. Edited by: E. Ros, R.W. Porcas, A.P. Lobanov, and J.A. Zensus